Bactrian camels (Camelus bactrianus) are the ancestors of all domestic camels. They were formerly found in the deserts of Mongolia and northwestern China and into Kazahkstan but are currently only found in a few isolated places. These two-humped camels are extremely well adapted to harsh desert climates—they have dense eyelashes and narrow nostrils that close tightly during sandstorms. Their two-toed feet have connective tissue between the toes that allows their feet to spread to make it easier to walk on the sand. They eat mainly shrubs and their humps store excess fat, allowing them to go for many days without food. They can also go for a period of time without water (it is not stored in the humps) because their bodies are good at conserving water. When they locate water, they’re able to drink up to 57 liters at one time. Some of these camels have developed the ability to drink salt water— and they’re the only mammals capable of this feat.